is in

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...

and Yamanashi Prefectures in Japan. Lying above the Ogōchi Dam, it is also known as the Ogōchi Reservoir. Lake Okutama is an important source of

drinking water Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, a ...

for Tokyo.

Description

The lake occupies part of the

town A town is a human settlement. Towns are generally larger than villages and smaller than cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an ori ...

of Okutama in

Nishitama District, Tokyo is a district located in Tokyo Metropolis, Japan. It comprises the following three towns and a village: * Hinode *Mizuho * Okutama * Hinohara Historically, the cities of Ōme, Fussa, Hamura, and Akiruno were part of Nishitama District but t ...

and the

village A village is a clustered human settlement or community, larger than a hamlet but smaller than a town (although the word is often used to describe both hamlets and smaller towns), with a population typically ranging from a few hundred ...

of Tabayama in Kitatsuru District, Yamanashi. The Taba ( Tama) River feeds Lake Okutama at its western end. From the southwest, the Kosuge River also flows into the lake. The Tama River drains the lake at the eastern end. The surroundings are famous for

cherry blossoms A cherry blossom, also known as Japanese cherry or sakura, is a flower of many trees of genus ''Prunus'' or ''Prunus'' subg. ''Cerasus''. They are common species in East Asia, including China, Korea and especially in Japan. They generall ...

in the spring.Cook, Chris,
Under the lonesome trees
, '' Japan Times'', 27 April 2007, p. 24.

Ogōchi Dam

* Dam height: 148 m * Dam length: 353 m * Greatest depth: 142 m * Mean depth: 43.6 m * Circumference when full: 45.37 km * Altitude of surface when full: 526.5 m * Area of surface when full: 4.25 km² * Capacity: 185,400,000 m³ * Completion: 1957 * Displaced: 945 households * Died during construction: 87 people

Notes

External links

Tokyo Metropolitan Government Bureau of Waterworks
{{DEFAULTSORT:Okutama Landforms of Tokyo Reservoirs in Japan Western Tokyo Landforms of Yamanashi Prefecture